On 11/07/2012 10:03 PM, Josh Berkus wrote:
Non-deliverable mail is returned to sender when either the remote
server gives a 5xx "undeliverable" response, or $max_queue_lifetime
expires.
Undelivered mail will hang around in the queue if the remote server
gives a 4xx "retry" response, or the remote server exists but is
unreachable, or if you've set soft_bounce=yes. So which is it?
Oh, thanks! So if I set $max_queue_lifetime lower, then it should clear
out those 4xx bounces? What about unreachable target servers?
Noel asked you which of the possible reasons he listed causes your queue
to fill up.
4xx are not bounces - they are deferrals, which are then queued.
Inspect your logs closely to find out why.
--
J.
